Jim Evers, a work-obsessed real estate agent, and his wife Sara receive a call to visit a sprawling and dilapidated mansion with the prospect of listing it for sale. Spotting an opportunity for a quick family vacation, Jim packs up their two children, Megan and Michael, for a visit to the mysterious estate. Upon arrival, they are greeted by Ramsley, the creepy butler, who informs them that the master of the house has been expecting Sara. As a thunderstorm traps them inside, the family soon discovers that the mansion is haunted by ghosts, and Sara bears a striking resemblance to the spectral master's long-lost love.

As the Evers family explores the eerie and massive mansion, they encounter a variety of supernatural phenomena and unearth the mansion's dark secrets. A friendly ghost named Madame Leota enlists their help to break a curse that has left the mansion's inhabitants in a state of limbo for centuries. With time running out, Jim must overcome his skepticism and fears to save his family from becoming permanent residents of the haunted mansion. Amidst the chaos, he learns valuable lessons about the importance of family and not letting work consume his life.